The data debunks a claim made by anti-trans activists related to mass shootings.

Historically, testosterone has been associated with masculinity. Someone having high levels of testosterone was shorthand for perceived higher levels of aggression, strength, and libido. However, ...

In a multicenter, randomized, double-blind, placebo-controlled, noninferiority trial, we enrolled 5246 men 45 to 80 years of age who had preexisting or a high risk of cardiovascular disease and who ...

Here’s when and why experts think testosterone should be prescribed to middle-aged women, and how it affects their lives. By Susan Dominus Testosterone use has recently exploded among middle-aged ...